Jean Frances Hambro married Hon. Vicary Paul Gibbs on September 19, 1942. After Captain Gibbs was killed in action Jean married Hon. Andrew Elphinstone on May 29, 1946 (pictured below).

I think this photo is from the second wedding:

The christening of the Elphinstones's first child, Rosemary, godchild of the Queen:

As Joye mentioned, Jean served as lady-in-waiting to the Queen and currently her daughter Jennifer Gordon-Lennox (seen below) attends HM in the same capacity. I think they might be the only mother-daughter duo to have this distinction.